<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
		<style type="text/css">
			input:checked {
				margin: 0 50px;
			}
		</style>
		<title>UI元素状态伪类 E:checked</title>
	</head>

	<body>
		<div style="width:733px; border: 1px solid #666; padding:5px;">
			<form method="post" action="">
				<input type="radio" name="css3" checked="checked" />
				<input type="radio" name="css3" />
			</form>
		</div>
	</body>

</html>